Improvement in chip-breakers for planing-machines



13. BENJAMIN. I Chip-Breaker forv Planing-Machine's.

Pategfi ed Nov. 6, 1877* ATTEST: lNvE-plTofi: @740 I MHz/4 UNITED STATEs PATENT OEEroE.

EDWIN BENJAMIN, OF GHIOAGQ ILLINOIS.

IMPROVEMENT IN CHIP-BREAKERS FOR PLANlNG-MACHINES.

Specification forniing part of Letters Patent No. 196,739, dated November 6, 1877; application filed January 10, 1876.

To all whom it may concern:

Be it known that I, EDWIN BENJAMIN, of Chicago, county of (look and State of Illinois, have invented a new and useful Improvement in Chip-Breakers for Planing-Machines, of I which the following is a specification:

The nature of the present invention consists of a chip-breaker pivoted to long and short bridges, which, at their opposite ends, are pivoted to the bed of the matcher-head, and a cutter-head table or bed, and Fig. 2 is an elevation thereof.

A represents the cutter-head table or bed, and B represents the line or circumference of the vertical knives when in motion. 0 shows the chip-breaker, which may be made of iron or steel, pointed at N, so that the wearingsurfa-ce may be removed when required. D J

represent bridges, which are pivoted to the chip-breaker at n n, and to the bed A at m m. The form of the bridges is shown in Fig. 2.

The bridge J is longer than D, for the purpose of bringing the point N back to P, Fig. 1,

on a line parallel to line B, in order to keep the point N all the time close to the cutter or matcher head, whether a board be narrow or wide, and thus prevent chips from being torn from a board, as is the case where the chipbreaker swings out from the cutter-head.

An ordinary spring-rod attachment, G I, is secured to the chip-breaker at B, and to a stud, E, by means of which the chip-breaker is held against a board.

I am aware that chip-breakers are old'devices, and that they are applied to planers and matchers in various ways 5 but I am not aware that my device has been employed to operate the point N parallel to the cutter-line of matcher-bits.

I claim and desire to secure by Letters Patent of the United States- The combination of the longer bridge J and shorter bridge D with the chip-breaker G and spring-rod attachment G I, as set forth.

EDWIN BENJAMIN.

Witnesses:

G. L. OEAPIN, O. H. ADIX. 

